Finding the Fourth Proportional to 1,488,066.10, 2,232,617.55 and 647,221.30

Step by Step Solution

1. Step 1: Write the proportion equation
   1,488,066.10 : 2,232,617.55 = 647,221.30 : x
2. Step 2: Convert to fraction form
   1,488,066.10/2,232,617.55 = 647,221.30/x
3. Step 3: Cross multiply
   1,488,066.10x = 2,232,617.55 × 647,221.30
4. Step 4: Simplify right side
   1,488,066.10x = 1,444,997,633,113.82
5. Step 5: Solve for x
   x = 1,444,997,633,113.82/1,488,066.10
6. Step 6: Final answer
   x = 971,057.42